Founded by former Google staffers, it counts the likes of Topshop and Asda among its clients.

Goldman's head of technology David Reis will join Qubit's board. He said: “Qubit saw early how powerful a lever customer experience is going to be for businesses and built an infrastructure that starts with the data and allows its clients to engage with their customers based on a richer and deeper understanding of their behaviours and needs.”

Bernard Liautaud of Balderton who is also on Qubit's board said: "This new round of financing is a great milestone for Qubit. It recognises the extraordinary momentum of the company, and it provides them with the resources required to continue to grow rapidly, and to lead the customer experience management space. We are very excited to have been associated with the company since its series A back in 2012, and we remain active and engaged investors."

The investment is just one of several in UK startups already this year to have raised significant sums from investors.